SMAD2 and colorectal cancer: In the current study, we found that, similar as SGPP1, Samd2 expression at mRNA and protein levels was upregulated in colorectal cancers and cell lines, exhibiting oncogenic phenotypes; moreover, Smad2 was repressed at transcriptional and translational levels by miR-27a, suggesting the direct target of miR-27a, a novel finding that has not been reported previously.